The problem seems to he associated with muscle spasm and strain in calf region..
Muscle stiffness can be sometimes associated with
vitamin d deficiency..
Sometimes, even decreased water level in body can cause similar pain.. do you feel stiffness in other parts of body as well..
Next Steps
I will suggest you to start with hot fomentation, take analgesic with muscle relaxant tablet, apply analgesic ointment locally, take
calcium and
vitamin d supplement, levocarnitine..
Also take plenty of fluids.. You can get x ray of knee joints if you feel any bony issue.. You can also get your vitamin D3 and
B12 levels checked alongwith CBC.
Health Tips
You can also start with calf stretching exercises, knee range of movement exercises..